DAC1220

® DAC 122 0 DAC1220 For most current data sheet and other product information, visit www.burr-brown.com 20-Bit Low Power DIGITAL-TO-ANALOG CONVERTER FEATURES q 20-BIT MONOTONICITY GUARANTEED OVER –40°C to +85°C q LOW POWER: 2.5mW q VOLTAGE OUTPUT q SETTLING TIME: 2ms to 0.012% q MAX LINEARITY ERROR: ±0.0015% q ON-CHIP CALIBRATION APPLICATIONS q PROCESS CONTROL q ATE PIN ELECTRONICS q CLOSED-LOOP SERVO-CONTROL q SMART TRANSMITTERS q PORTABLE INSTRUMENTS DESCRIPTION The DAC1220 is a 20-bit digital-to-analog (D/A) converter offering 20-bit monotonic performance over the specified temperature range. It utilizes delta-sigma technology to achieve inherently linear performance in a small package at very-low power. The resolution of the device can be programmed to 20 bits for fullscale, settling to 0.003% within 15ms typical, or 16 bits for full-scale, settling to 0.012% within 2ms max. The output range is two times the external reference voltage. On-chip calibration circuitry dramatically reduces low offset and gain errors. XIN XOUT VREF The DAC1220 features a synchronous serial interface. In single-converter applications, the serial interface can be accomplished with just two wires, allowing low-cost isolation. For multiple converters, a CS signal allows for selection of the appropriate D/A converter. The DAC1220 has been designed for closed-loop control applications in the industrial process control market and high-resolution applications in the test and measurement market. ...